Junior Quantitative Analyst Interview Questions

8,218 junior quantitative analyst interview questions shared by candidates

Took 5 to 10 minutes to review my research projects. How to deal with 1 million possible factors that may affect revenues, how large the data should be? And then two questions related to linear regression and logistic regression, respectively.
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Quantitative Analyst

Interviewed at Google

4.4
Sep 23, 2015

Took 5 to 10 minutes to review my research projects. How to deal with 1 million possible factors that may affect revenues, how large the data should be? And then two questions related to linear regression and logistic regression, respectively.

Flip a fair coin 1000 times. What's the probability that the number of heads come up more than 550 times? What theorem would you use to describe probabilities of rare events as number of coin flips goes to infinity?
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Quantitative Analyst

Interviewed at D. E. Shaw & Co. - Investment Firm

3.8
Nov 17, 2014

Flip a fair coin 1000 times. What's the probability that the number of heads come up more than 550 times? What theorem would you use to describe probabilities of rare events as number of coin flips goes to infinity?

Given a fair die 1-6, what would be the expected value of the result? What if you have two chances? After the first row, you can choose whether or not you want to keep it. What would be the maximum expected value based on the best strategy.
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Quantitative Trader

Interviewed at Jane Street

4.4
Oct 10, 2015

Given a fair die 1-6, what would be the expected value of the result? What if you have two chances? After the first row, you can choose whether or not you want to keep it. What would be the maximum expected value based on the best strategy.

You have a drawer with an infinite number of two colors of socks, which exist in equal probability. What is the expected number of attempts at taking out socks individually from the drawer before a matching pair is found?
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Quantitative Trader Intern

Interviewed at Jane Street

4.4
Sep 18, 2019

You have a drawer with an infinite number of two colors of socks, which exist in equal probability. What is the expected number of attempts at taking out socks individually from the drawer before a matching pair is found?

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